Beijing Silk Road Enterprise Management Services Co., Ltd.
| Type | Thick Film Resistor |
| Resistance | 4.7Ω |
| Power(Watts) | 30W |
| Temperature Coefficient | ±100ppm/℃ |
| Tolerance | ±5% |
| Operating Temperature | -50℃~+150℃ |
| Description | Thick Film Resistor 4.7Ω 30W ±100ppm/℃ ±5% TO-220-2 Through Hole Resistors RoHS |
| Mfr. Part # | PWR221T-30-4R70J |
| Package | TO-220-2 |
| Model Number | PWR221T-30-4R70J |
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Product Specification
| Type | Thick Film Resistor | Resistance | 4.7Ω |
| Power(Watts) | 30W | Temperature Coefficient | ±100ppm/℃ |
| Tolerance | ±5% | Operating Temperature | -50℃~+150℃ |
| Description | Thick Film Resistor 4.7Ω 30W ±100ppm/℃ ±5% TO-220-2 Through Hole Resistors RoHS | Mfr. Part # | PWR221T-30-4R70J |
| Package | TO-220-2 | Model Number | PWR221T-30-4R70J |
The Bourns PWR221T-30 Series is a TO-220 style power resistor manufactured using thick film on alumina ceramic technology. Designed for current limiting, capacitor discharge, and current measurement circuits, this series is ideal for power supplies in telecom and industrial applications, as well as motor drives, test and measurement equipment, and rectifiers. Key features include a TO-220 housing, low inductance, a ceramic backplane, high power rating, and compliance with AEC-Q200 and RoHS standards.
| Parameter | Value(s) |
|---|---|
| Resistance | 0.02 to 130 K (See Popular Resistance Values table) |
| Power Rating @ 25 C Case Temperature | 30 W** |
| Tolerance | 1 %***, 5 % |
| TCR (0.100 <R<130.0K ) | 100 PPM/C |
| TCR (0.050 <R<0.100 ) | 300 PPM/C |
| TCR (0.020 <R<0.050 ) | 600 PPM/C |
| Thermal Resistance - Rthj | 4.2 C/W |
| Inductance | 0.1 H maximum |
| Operating Voltage | P*R with a maximum of 250 V |
| Dielectric Strength | 2 KV AC |
| Insulation Resistance | 10 G |
| Operating Temperature | -55 C to +150 C |
| Short Term Overload R | 0.25 % |
| Load Life R (2000 hours at rated power) | 1.0 % |
| Thermal Shock R (-55 C to 155 C, 5 cycles) | 0.5 % |
| Resistance to Soldering Heat R (10 seconds at 270 C) | 0.5 % |
| Vibration R (20 G 10-2000 Hz .06 D.A.) | 0.25 % |
| Terminal Strength R (MIL-STD-202, Method 211 Test A1) | 0.2 % |
| Shock R (Saw Tooth: 100 g/6 ms) | 0.5 % |
| Humidity R (Steady State) 1000 hrs. 85 C/85 % RH | 0.5 % |
| High Temperature Exposure R (100 hrs - 40 % Pr @ +125 C) | 0.5 % |
| Power Rating (Free Air) | 2.25 W |
| Power Derating (25C Ambient, Mounted on double-sided copper board) | 2.8 W |
| Dimensions (Refer to diagram) | 10.41 0.25 (.410 .010) CL, 8.38 0.25 (.330 .010) LC, 3.18 0.1 (.125 .004) DIA., 1.38 0.25 (.054 .010), 3.18 0.25 (.125 .010), 3.18 0.25 (.125 .010), 2.92 0.25 (.115 .010), 2.54 0.25 (.100 .010), 12.7 1.27 (.500 .050), 15.62 0.25 (.615 .010), 16.26 0.25 (.640 .010), 9.14 0.25 (.360 .010), 0.72 0.12 (.029 .005), 1.03 0.25 (.041 .010), 5.08 0.25 (.200 .010), 1.02 0.25 (.040 .010) |
| Model Number Structure | PWR221T-30-ResistanceValue-Tolerance |
| Example Part Marking | 221 30 R500 1% YYWW COSTA RICA |
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
**Power rating of 2.25 W when mounted free to air (no heat sink).
*** Available for most values. Check Popular Resistance Values table.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer
Year Established:
2009
Employee Number:
>>300
Ecer Certification：
Verified Supplier
Company Profile Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an... Company Profile Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an...
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